Characterization of lead-free alkali niobate piezoceramics by the Inverse Method

Ogo K, Weiß M, Rupitsch S, Lerch R, Kakimoto KI (2015)

Publication Status: Published

Publication Type: Conference contribution

Publication year: 2015

Journal

IEEE International Ultrasonics Symposium Institute of Electrical and Electronics Engineers (IEEE)

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Conference Proceedings Title: Ultrasonics Symposium (IUS), 2015 IEEE International

Event location: Taipei

DOI: 10.1109/ULTSYM.2015.0253

Abstract

Material constants of manganese-doped sodium potassium niobate (NKN) were characterized by the Inverse Method, which provides material constants by minimizing deviations between frequency-resolved electrical impedance measurements and finite element simulations. Impedance curves of two different types of ceramic samples featuring same geometric shape but different polarization directions, were measured in the temperature range of -25 degrees C to 150 degrees C. Material constants at each temperature were characterized by using the measured impedance curves. As a result, an anisotropic decrease of the elastic stiffness constants was observed with increasing temperature. It can be assumed that this temperature dependency is attributed to orthorhombic-tetragonal phase transition. Furthermore, the maximum loss factor was obtained at 75 degrees C, which caused minimum impedance range of all resonance-antiresonance pairs at the same temperature.

Authors with CRIS profile

Manuel Weiß Lehrstuhl für Autonome Systeme und Mechatronik Stefan Rupitsch Lehrstuhl für Autonome Systeme und Mechatronik Reinhard Lerch Lehrstuhl für Autonome Systeme und Mechatronik

Involved external institutions

Nagoya Institute of Technology / 名古屋工業大学 Nagoya Kōgyō Daigaku

Japan (JP)

How to cite

APA:

Ogo, K., Weiß, M., Rupitsch, S., Lerch, R., & Kakimoto, K.-I. (2015). Characterization of lead-free alkali niobate piezoceramics by the Inverse Method. In Ultrasonics Symposium (IUS), 2015 IEEE International. Taipei: Institute of Electrical and Electronics Engineers (IEEE).

MLA:

Ogo, Kenji, et al. "Characterization of lead-free alkali niobate piezoceramics by the Inverse Method." Proceedings of the Ultrasonics Symposium (IUS), Taipei Institute of Electrical and Electronics Engineers (IEEE), 2015.

BibTeX: Download